LangChain
Modular framework and SaaS platform for building LLM applications with retrieval-augmented generation, agents, and memory. Supports over 100 model providers and vector stores, with LangGraph for stateful agents and LangSmith for monitoring. Recent additions include a no-code builder, improved caching, and compliance templates. Widely used for customer support chatbots, internal knowledge bases, and automated workflows. Enterprise plans offer dedicated infrastructure and priority support. Community version remains free and open-source.
From $99/mo
Key Features
- ✓Modular chains and agents
- ✓RAG with vector stores
- ✓LangGraph for stateful workflows
- ✓LangSmith monitoring
- ✓Multi-provider support
Pros
- +Easy to use
- +Good support
- +Regular updates
Cons
- -Learning curve
- -Pricing could be clearer